Shade roller stop



March 29, 1,932. B. E. MESLER SHADE ROLLER STOP Filed March 28, 1930ATTORNEY Patented Mar. 29, 1932 .j

" BERTRAM E. MESLER, F BROOKLYN, NEWY'OIR-IK SHADE ROLLER .STOP

Application filed March 28, 1930. Serial No. 439,757..

This invention relates, primarily, to improvements in shade rollerstops; and the principal object, in that connection, is to provide anovel keying device, for quick and easy attachment to and anchorage on awooden shade roller to which the shade roller stop is applied, and alsofor simplifying the construction and cheapeningthe cost of a shaderoller stop of the general type disclosed in U. S. Patent to me No.1,765,170.

In the accompanying drawings, wherein there are illustratively shown anembodiment of said keying device as at present preferred, and a shaderoller stop pursuant to said copending application but of a modified.con-

I struction for co-acting pursuant to present preference with the keyingdevice just men-- tioned:

Fig. 1 is a perspective View of a shade roller provided with a stopadapted to include a keying device according to the invention, andmounted upon a window casing.

Fig. 2 is an enlarged vertical longitudinal sectional view through oneend of the shade roller showing, as part of such stop, a preferredembodiment of said keying device,

with the stop parts shown in lowered shade position.

Fig. 3 is aview similar to Fig.2 but showing the position of thepartswhen the shade is raised to the intended limit.

Fig. 4 is a vertical transverse sectional view on the line 4-4: of Fig.2.

Fig. 5 is a collective perspective view of the several stop parts.

It is preliminarily pointed out that, in Figs. 1 and 2, as in my saidpatent, the numeral 1O designates a shade roller having a flexible shadel1 windable thereon, the free edge 12 of which shade carries the usualreinforcing strip from which a pull cord 13 depends. The roller, as iswell known, is

hollow for the purpose of housing a helical spring 14, which,.when woundup, places the roller under tension for winding the shade from a loweredposition to a raised position; a suitable ratchet mechanism (notshown).being provided for locking the shade in a lowered positionagainst winding, and having associated therewith a flat trunnion 15exrib 18b.-

tending from one end of the roller 10 to fit into a holding slot in asupporting bracket 16 fixedly secured to. one of the sides of the windowcasing 17. I

Referring now to the keying device of the present invention, the same isillustrated in Figs. 2 to 5, as embodying aunitary metal fitment fixedto the shade roller 10 adjacent the end supported in the bracket 16. v

This keying device 18, is here shaped to include a cylindrical head 19,a shank 20, and

a blade-like lower terminus 21; thedevice 18 having been found to beapplicable, by mere finger pressure on'the top of head 19, to cause thecurved and sharp lower rounded edge of terminus 21 topierce thecomparatively soft wood commonly found as the material of which theroller 10 is made. The grain of such wood running longitudinally of theroller, the device 18, during this piercing op eration, is arranged at aremoval from the position shown in Figs 2 to 5, that is, with theterminus 21 parallelto said grain; and when the shank 20 is completelydown in the wood, the device 18is rotated 90 to arrange the terminus 21at right angles to said grain. This final condition, as illustrated inFigs. 2 and 4, shows the upper blunt edges of the terminus21 lockedagainst the inner surface of the hollow in the roller containing spring14; an ideal condition. In any event, however, when the device '18 isapplied to a wooden roller as above, the terminus 21 will extend at anangle to the grain of such wood, thus to lock the device againstwithdrawal; whether. or not the shank 20 only, or both said shank andthe terminus, be finally embedded in the wood.

Head 19 of this. keying device 18 is slotted on opposite sides asclearly shown in Figs. 2 to 5, such slots being marked 1964; therebyproviding above and below each such slot a Referring nowfinally to theother parts of the stop illustrated. whichare identical with orsubstantial equivalents 01": parts claimed as stop elements: in saidcopending application, these parts maybe briefly described, as 1follows: I

The slots 19a. of the keying device of the present inventioninter-engage with the side walls of a slot 22 cut longitudinally of thecylindrical wall 23 of a sleeve member 24. If a plurality of keyingdevices are embedded in the roller, such sleeve member may be providedwith one more additional slots like the slot 22, for instance, asindicated at- 22 in Fig. 5; but such duplications are deemedunnecessary. This is so, because when a device 18 is arranged with itsterminus 21 at an angle to the wood grain as shown, it can-not bewithdrawn from the roller; and with member 24 in place on the roller,the device 18 cannot be rotated about its shank axis to disturb,

said angle.

The interior wall of the sleeve member is screw threaded as at 25 forthreaded engagement with the exterior threads 26 provided on a capmember 27. The end wall of the cap member 27 is provided with acruciform slot 28 affording the equivalent of two intersecting elongatedslots through either of which the flat trunnion 15 may be extended inassembling the parts to have the cap member fit over the end of theroller and to arrange the elements as shown in Figs. 2, 3 and at. Boththe keying device 18 and the sleeve member 24, but not the cap member27, rotate with the roller 10, with the result that, due to threads 25and 26, longitudinal sliding movement is imparted to the sleeve member24 while there is a relative rotation or spiralling movement betweenmembers 24 and 27. Assuming, that the shade is in lowered position, theparts are as shown in Fig. 2 of the drawings; that is, the outer end 24aof the sleeve member 24: is in spaced relation to the shade bracket 16and'the device 18 is adjacent to the inner end of the slot 22. Upon theactuation of the pull cord 13 to release the ratchet mechanism, thespring 14 imparts a winding movement to the roller 10, and during thiswinding movement. the sleeve member 24 is fed outwardly until the outerend 240 thereof contacts with the bracket 16, thus arresting movementand bringing the roller, gently, to a stop.

While I have described what I deem to be the most desirable embodimentof my inven tion, it is obvious that other embodiments are possible, andother uses of such embodiments, without in any way departing from thespirit of my invention, and I therefore do not limit myself to the exactdetails of construction herein set forth nor to anything less than thewhole of my invention limited only by the appended claim.

I claim:

In combination with a shade roller and an axially movable sleeveconstituting a limiting stop for the roller after a prescribed number ofrevolutions, the sleeve having a slot opening at one end, a key memberto preclude relative angular movement of the roller and sleevecomprising a head formed with parallel flats in: diametrically oppositesides, a shank signature.

- BERTRAM E. MESLER.

